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Finding the Fourth Proportional to 6,271.80, 8,655.11 and 3,619.23

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Solution

The fourth proportional to 6,271.80, 8,655.11 and 3,619.23 is: 4,994.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,271.80 : 8,655.11 = 3,619.23 : x
  2. Step 2: Convert to fraction form
    6,271.80/8,655.11 = 3,619.23/x
  3. Step 3: Cross multiply
    6,271.80x = 8,655.11 × 3,619.23
  4. Step 4: Simplify right side
    6,271.80x = 31,324,833.77
  5. Step 5: Solve for x
    x = 31,324,833.77/6,271.80
  6. Step 6: Final answer
    x = 4,994.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.